Stayed at Northolme and visited Labriz last year. Choice will be largely up to personal preference. Labriz is a nicer hard product and more "exclusive" but you're trapped on a single island with little to do. It can also get quite windy where their beach is and several we met on Northolme said there were several days they couldn't enjoy the beach.

For us, it was a no brainer. We knew we wanted the ability to explore the island of Mahe and to get off island for a day trip at least once (which is nearly impossible from Labriz, absent a hotel sponsored excursion). Northolme is VERY small with a small pool and beach. Staff were wonderful but typical "island" laid back attitude that meant service wasn't always as attentive as you might expect, but it all blended into the island vibe. No lounge at Northolme, but breakfast was excellent and included a daily breakfast cocktail (that rotated) you could make yourself. We did not get an upgrade as a Diamond but did get oue requested room. They offered to try to upgrade us for part of the stay, but we preferred to not have the hassle of moving. Because there are very few rooms here, upgrades (especially for stays of 5+ nights) are not easy for the hotel to process, but they try.

Wishing I was back there now....